Hi,
I am making multiple calls to gzfile() via read.table(), e.g.
> x <- read.table( gzfile( "xxx.gz" ) )
After i do this many times (I haven't counted, but probably between 50 and
100 times) I get the error message:
Error in open.connection(file, "r") : unable to open connection
In addition: Warning message:
cannot open compressed file 'xxx.gz'
however, I also find that:
> showConnections()
description class mode text isopen can read can write
so there are no (apparently) open connections. Calling closeAllConnections()
does not fix the problem. I have to quit and re-start R.
I am using R 2.5.0 on a Mac (OSX 10.4.9).
Anyone know if this is a bug or a 'feature'? I see from the gzfile help
that:
In general functions using connections
will open them if they are not open, but then close them again, so
to leave a connection open call 'open' explicitly.
Thanks.
-David
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